Design currently Allow users to make units that are slightly larger than 1 U However it does not have air holes if they do. Consider fixing this edge case. <img width="1820" height="770" alt="Image" src="https://github.com/user-attachments/assets/98520368-ce9d-4ce1-adad-1195652c6146" /> <img width="1768" height="725" alt="Image" src="https://github.com/user-attachments/assets/4ee2aef0-2b94-4666-bf98-19733ed9fcc3" />